Superheater for water tube boilers



SUPERHEATER FOR WATER TUBE BOILERS Filed NOV. 6, 1930 INVENTOR Gasfav fiaaer aim.

ATT nnnn v'v that is the frame with the Patented May 19, 1931 ears 1:

GUSTAV BAUER, OF HAMBURG, GERMANY SUPER-HEATER FOR WATER TUBE BOILERS Application filed November 6, 1930, Serial The object of this invention is to enable the super-heater in a water tube boiler to be easily mounted and dismounted. F or this purpose the whole supw-heater assembly, suporheater tubes and the guide walls for the hot gases covering the super-heater surfaces, is so constructd that these parts can easily he slid in and drawn out of the boiler. According to the invention tins is achieved by the superheater frame as a whole being supported on continuous runner-like rolled sections and the guide wall for the hot gases covering the super-heater being made up of several withdrawable parts.

invention. Figure 1 is a vertical The accompanying drawings show diagrammatically an example embodylng the section through part of a water tube boiler with the 0 sn er-heater assembl in "osition, Fi ure 2 is a plan of the super-heater, and Figure 3 one of the parts of the upper guide wall.

The super-heater a is, as shown in Figure 1, mounted in the usual way among the water tubes connecting the upper and lower drums of the boiler. The super-heater frame 7) as a whole is set on continuous roiled sections 0, which can be secured either to the frame or to the lower guide wall (Z. By the aid of these runner-like supports the superheater can easily be slid in and drawn out, being laterally supported in known manner by supporting plates 6.

The guide wall over the super-heater consists of a plurality of parts f of the form shown in Figure 3. This guide wall as a whole is also supported laterally by supporting plates 71 The separate parts of the upper guide wall are metal plates with rolled or bent over edges 9 which bear against the tubes and thus form siding and guiding means for the separate plates when they are slid in or drawn out. The sub-division into parts of the upper guide wall subjected to intense heat radiation and the form of the parts considerably facilitates their mounting or dismounting or the partial displacement of the wall. The water tubes lying be low this wall can in known manner he collected together to form a closed wall of tubes No. 493,838, and in Italy October 30, 1929.

to form a protection for the guide wall against heat. In order to make the superheater frame of the guide walls more resistant to the action of heat they can be made of heat resisting iron or be protected by a covering of suitable material.

lVhat I claim is 1. A water tube boiler including a plurality of steam generating tubes, a detachable superheater including a plurality of superheater tubes, and a frame structure holding said tubes together as a unit, and substantially horizontal runners disposed between said steam generating tubes and said frame structure for supporting said superheater unit, whereby said superheater unit is slidable in a substantially horizontal direction out of sliding contact with the steam generating tubes.

2. A water tube boiler including a lower water drum and an upper steam drum substantially parallel therewith, two banks of steam generating tubes extending between said drums and spaced apart, a superheater unit disposed in the space between said banks of tubes and including a plurality of superheater tubes, and a frame structure holding said superheater tubes together to form said unit, a supporting guide wall supported on the lower of said banks of tubes, and substantially horizontal runner members associated with said supporting wall for supporting said superheater unit, said superheater being detachable as a unit from said supporting .wall and slidable in a substantially horizontal direction on the said runner members.

3. A water tube boiler including a bank of steam generating tubes, a superheater including a plurality of superheater tubes, and a frame structure connecting said superheater tubes to form a unitary superheater unit, substantially horizontal tween said steam generating tubes and said frame structure for supporting said superheater, said superheater being detachable as a unit and slidable in a substantially horizontal direction out of sliding contact with the steam generating tubes, and an upper guide wall including a plurality of separable and detachable baffle plates disposed above said runners disposed besuperheater unit, and each having the longitudinal edges thereof turned to fill the space between superposed rows of steam generating tubes.

4. A Water tube boiler having tWo banks of steam generating tubes spaced apart, a superheater disposed in the space between said banks of tubes, and including superheater tubes, and a frame structure holding said super-heater tubes together to form a superheater unitary assembly, substantially horizontal runners supported on the steam generating tubes for supporting said superheater assembly and facilitating sliding removal of said superheater assembly, and a baflie between adjacent roWs of tubes of the upper bank, and including a plurality of separable and detachable baffle plates longitudinally extending in a substantially horizontal direction, and each having the longitudinal edges thereof turned upwardly.

In testimony whereof I have signed my name to this specification.

GUSTAV BAUER. 

